A tidal range dynamic demonstration instrument suitable for geography teaching

Abstract

The invention discloses a tidal range dynamic demonstrator suitable for geography teaching, comprising a globe, a tidal ellipsoid, a bracket, a rotating handle, a retractable distance measuring rod and a base; an arc-shaped bracket is connected to the base, a globe is arranged between the top and the bottom of the bracket, a rotating handle that can drive the globe to rotate is arranged at the top of the bracket, a tidal ellipsoid is arranged outside the globe, and the tidal ellipsoid is fixedly connected to the bracket; a retractable distance measuring rod is arranged on the surface of the globe, and the retractable distance measuring rod is respectively arranged at the equator, the 30° latitude circle and the 60° latitude circle. The invention can realize the rotation of the globe by rotating the handle, and the height of the tide at different positions can be read at the same time of the rotation, so as to understand the dynamic change law of the tidal height. The invention has a simple structure, is easy to operate and is convenient to carry. It has good practical value and broad application prospects in the field of teaching display tools.

Description

Technical Field

[0001] The invention relates to the field of teaching and display tools, in particular to a demonstration instrument for dynamic tidal changes. Background Art

[0002] The tidal ellipsoid display teaching aid is a model of an egg-shaped ellipsoid formed by the tidal force on the surface of the earth in the earth-moon system. The tidal ellipsoid is to facilitate the understanding of the ebb and flow of the earth. People imitate the shape of the tidal ellipsoid and reduce it according to a certain ratio to make a model of the tidal ellipsoid. A globe is provided inside the tidal ellipsoid to facilitate the observation of the tidal changes at different locations on the earth, and to help users understand the time and position of the ebb and flow of the tide. At present, the tidal ellipsoid has not been widely used in teaching or other fields. In particular, when students are learning the part of tide, they can only observe the flat static pictures in the books, and it is difficult to imagine the changes of the actual tide. Therefore, those skilled in the art provide a tidal ellipsoid to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0003] The invention aims to provide a tidal range dynamic demonstrator suitable for geography teaching, which can observe the height changes of tides at different positions on the earth while showing the rotation of the earth.

[0004] The technical solution adopted by the present invention is: a tidal range dynamic demonstration instrument suitable for geography teaching, comprising a globe, a tidal ellipsoid, a bracket, a rotating handle, a retractable ranging rod and a base;

[0005] An arc-shaped bracket is connected to the base, a globe is installed between the top and bottom of the bracket, a rotating handle that can drive the globe to rotate is provided at the top of the bracket, a tidal ellipsoid is provided outside the globe, and the tidal ellipsoid is fixedly connected to the bracket;

[0006] The surface of the globe is provided with a retractable ranging rod, which is respectively arranged at the equator, the 30° latitude circle and the 60° latitude circle, so as to observe the dynamic change characteristics of tides near the equator, in the middle and low latitudes and in the high latitudes;

[0007] The telescopic distance measuring rod comprises a slidable ball, a spring, a telescopic rod and a scale, wherein the spring is arranged inside the telescopic rod, the top end of the telescopic rod is provided with a slidable ball, and the outer surface of the telescopic rod is provided with a scale.

[0008] Preferably, the tidal ellipsoid is made of blue transparent plastic.

[0009] The tidal range dynamic demonstrator of the present invention rotates the globe by turning the rotating handle. During the rotation process, the spring controls the length of the telescopic distance measuring rod, and the height of the tide at different positions can be read. The tidal ellipsoid is connected to the bracket but cannot be rotated. By rotating the globe, the vertical distance between the earth surface and the tidal ellipsoid is read, and the quantitative understanding of the dynamic change of the tidal range is realized.

[0010] Beneficial effects: The invention can realize the rotation of the globe by rotating the handle, and the height of the tide at different positions can be read at the same time, so as to understand the dynamic change law of the tidal height. The invention has a simple structure, is easy to operate, and is convenient to carry. It has good practical value and broad application prospects in the field of teaching display tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A side schematic diagram of a tidal dynamic demonstrator according to the present invention.

[0012] Figure 2 A front schematic diagram of the tidal dynamic demonstrator of the present invention.

[0013] Figure 3 Schematic diagram of the telescopic distance measuring rod structure of the present invention Figure 1 .

[0014] Figure 4 Schematic diagram of the telescopic distance measuring rod structure of the present invention Figure 2 .

[0015] Explanation of reference numerals: 1-globe; 2-tidal ellipsoid; 3-bracket; 4-rotating handle; 5-retractable ranging rod; 6-base; 51-slidable ball; 52-spring; 53-retractable rod; 54-scale. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0017] like Figure 1 and 2 As shown, a tidal range dynamic demonstrator suitable for geography teaching comprises a globe 1, a tidal ellipsoid 2, a bracket 3, a rotating handle 4, a retractable ranging rod 5 and a base 6;

[0018] The base 6 is connected with an arc-shaped bracket 3, a globe 1 is installed between the top and bottom of the bracket 3, a rotating handle 4 is provided at the top of the bracket 3 to drive the globe 1 to rotate, a tidal ellipsoid 2 is provided on the outside of the globe 1, and the tidal ellipsoid 2 is fixedly connected to the bracket 3; the tidal ellipsoid 2 is made of blue transparent plastic. A retractable ranging rod 5 is provided on the surface of the globe 1, and the retractable ranging rod 5 is respectively provided at the equator, 30° latitude circle and 60° latitude circle, so as to observe the dynamic change characteristics of tides near the equator, in the middle and low latitudes and in the high latitudes;

[0019] like Figure 3 and 4 As shown, the telescopic ranging rod 5 includes a slidable ball 51, a spring 52, a telescopic rod 53 and a scale 54. The spring 52 is arranged inside the telescopic rod 53, the top of the telescopic rod 53 is provided with a slidable ball 51, and the outer surface of the telescopic rod 53 is provided with a scale 54.

[0020] The tidal range dynamic demonstrator of the present invention rotates the globe 1 by turning the rotating handle. During the rotation process, the spring 52 controls the length of the telescopic distance measuring rod 5, and the height of the tide at different positions can be read. The tidal ellipsoid 2 is connected to the bracket 3, but cannot be rotated. By rotating the globe 1, the vertical distance between the earth surface and the tidal ellipsoid is read, and the quantitative understanding of the dynamic change of the tidal range is realized.

[0021] The present invention is described by way of embodiments, but the present invention is not limited thereto. For this description, those skilled in the art will be able to implement or use the present invention in the broadest scope consistent with the principles and features disclosed herein.

Claims

1. A tidal range dynamic demonstration instrument suitable for geography teaching, characterized by: Includes globe, tidal ellipsoid, stand, rotating handle, retractable rangefinder rod and base; An arc-shaped bracket is connected to the base, a globe is installed between the top and bottom of the bracket, a rotating handle that can drive the globe to rotate is provided at the top of the bracket, a tidal ellipsoid is provided outside the globe, and the tidal ellipsoid is fixedly connected to the bracket; The surface of the globe is provided with a retractable distance measuring rod, which is respectively arranged at three locations: the equator, the 30° latitude circle and the 60° latitude circle; The telescopic distance measuring rod comprises a slidable ball, a spring, a telescopic rod and a scale, wherein the spring is arranged inside the telescopic rod, the top end of the telescopic rod is provided with a slidable ball, and the outer surface of the telescopic rod is provided with a scale.

2. A tidal range dynamic demonstration instrument suitable for geography teaching according to claim 1, characterized in that: The tidal ellipsoid is made of blue transparent plastic.

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